package com.example.administrator.androidwork5;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

public class MainActivity extends AppCompatActivity {

    private static final String TAG ="MainActivity" ;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        String jsonStr="{\"temp\":\"20℃/30℃\",\"weather\":\"晴转多云\",\"name\":\"上海\",\"pm\":\"80\",\"wind\":\"1级\"}";
        String jsonArrayStr="[\n" +
                "  {\"temp\":\"20℃/30℃\",\"weather\":\"晴转多云\",\"name\":\"上海\",\"pm\":\"80\",\"wind\":\"1级\"},\n" +
                "  {\"temp\":\"15℃/24℃\",\"weather\":\"晴\",\"name\":\"北京\",\"pm\":\"98\",\"wind\":\"3级\"},\n" +
                "  {\"temp\":\"26℃/32℃\",\"weather\":\"多云\",\"name\":\"广州\",\"pm\":\"30\",\"wind\":\"2级\"}\n" +
                "]";
        try {
           JSONObject jsonObject = new JSONObject(jsonStr);//将字符串转换为json对象
           String temp = jsonObject.getString("temp");//读取json对象中的属性值
            String weather = jsonObject.getString("weather");

            Log.e(TAG, "onCreate: "+temp );
            //解析json数组字符串
            JSONArray jsonArray = new JSONArray(jsonArrayStr);
            Log.e(TAG, "onCreate: "+jsonArray.length() );
            for(int i=0;i<jsonArray.length();i++){
                JSONObject jsonObject1=jsonArray.getJSONObject(i);//从json数组对象中获取JSONObject

                temp=jsonObject1.getString("temp");//读取json对象中的属性值
                weather = jsonObject1.getString("weather");
                Log.e(TAG, "onCreate: "+temp+"=="+weather );
            }

        } catch (JSONException e) {
            //e.printStackTrace();
        }
    }
}
